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Platanthera orbiculata

Orchidaceae

Round-Leaved Bog Orchid

Platanthera orbiculata
Erect flower stem from 2 large basal leaves. The 2 nearly round leaves are flat on ground, 2–3 in. across, shiny above, silver beneath. Flowers numerous but not crowded on stem, white to greenish; upper sepal short, rounded; side petals spreading, egg-shaped; lower petal linear to 1/2 in. long; spur longer than lower petal, often more than 1 in., curved. Grows in moist meadows, forests, along streams.

  • Rarity: Uncommon
  • Flowering Time: Mid Summer
  • Flower Form: petals 3 or 6, orchids
  • Life Cycle: Perennial
  • Height: 12–24 inches
  • Habitat: Coastal, East-side Forest, Meadow, Moist Riverbanks, West-side Forest
  • Found In: N Cascades NP
  • Native: Yes
  • Latin Synonyms: Habenaria orbiculata, Lysias orbiculata

Map of where Platanthera orbiculata is found